A new tetra­kis-substituted pyrazine carb­oxy­lic acid, 3,3′,3′′,3′′′-{[pyrazine-2,3,5,6-tetra­yltetra­kis(methyl­ene)]tetra­kis­(sulfanedi­yl)}tetra­propionic acid: crystal structures of two triclinic polymorphs and of two potassium–organic frameworks

Pacifico, J.; Stoeckli-Evans, H.

doi:10.1107/S2056989021003479

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 7
(a) Views of the coordination sphere of the potassium ion in KH₃L1 [symmetry code: (i) −x + 1, y, −z − $[{1\over 2}]$ ] and (b) views of the coordination sphere of the potassium ions in K₂H₂L1 [symmetry codes: (i) −x, y, −z + $[{3\over 2}]$ ; (ii) x, y − 1, z; (iii) x, y + 1, z; (iv) −x, y + 1, −z + $[{3\over 2}]$ ].

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 77| Part 5| May 2021| Pages 480-490

https://doi.org/10.1107/S2056989021003479

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